Bicycle-pump.



No. 695.002. Patented Mal". II, 1902.

DE WANE B. SMITH.

BHJYCLE PUMP. (Application filed Feb. 16; 1399.)

(No Model.)

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DE VVANE B. SMITH, OF DEERFIELD, NEHV YORK.

BICYCLE-FUN! P.

SPECIFICATION forming part of Letters Patent No. 695,002, dated March 1 1, 1 902. Application filed February 16, 1899. I Serial No. 705,646. (No model.)

To aZZ whom it may concern:

Be it known that 1, DE WANE B. SMITH, of Deei'field, in the county of Oneida and State of New York, have invented certain new and useful Improvements in Bicycle-Pumps; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon,which form part of this specification.

The object of my present invention is to provide a bicycle-pump which can be easily and conveniently adjusted to the wheel and detached therefrom, and which is capable of being easily and conveniently operated, and which involves improved details of construction, as hereinafter pointed out.

Figure 1 shows avertical section of a bicycle-pu mp of my present construction, excepting the lower portion of the stirrup or foot, which is not shown in section. Fig. 2 shows in perspective the lower portion of a bicyclepump of the form of construction shown in Fig. 1 applied t9 a bicycle-tire. Fig. 3 shows the lower portion of the pump with a modi fled form of construction of foot or stirrup. Fig. a shows in perspective, in connection with a portion of wheel, the lower portion of a pump of another modified form of construction. Fig. 5 shows in a similar manner still another modified form of construction. Fig. 6 shows, on an enlarged scale,in vertical section-,details of the construction relating to the means of attaching the pump to the tire connection.

Referring to the reference letters and figures in a more particular description, 1 indicates the barrel or cylinder of the pump, which is secured at its lower end in the base 2 and is provided with a piston-head 8 and a piston-rod 4, having at its upper end a han= dle 5. The piston-rod passes through a suitable opening at the upper end of the cylinder in the cap or head 6. As shown in Fig. 1, there are provided the stirrup '7 and the rigid side projecting spout 8. The spout or pipe 8 is provided with a passage-way 9, communicating with the cylinder, and is provided on its projecting end with a downwardlyforcing it down with a slight pressure.

is provided a shoulder 10, which receives the soft-rubber or elastic bushing or connectingpiece 11, constituting a tire-cushion connection. The piece 11 is provided with a small central opening 12 and a conical opening 13 and is held in position with the end of the spout by a screw-cap 14 or any other suitable means for this purpose. Within the lower end of the cylinder the base 2 is provided with a conical portion 2, adapted to open out or extend the downwardly-turned lip of the piston packing-piece 3, of leather or other suitable material.

The operation of this pump is substantially as follows: The operator removes the usual valve screw or cap from the tire-coupling or valve-nipple and then,bringing the pump into proper position, slips the downwardly-turned opening end of the spout 8 onto the nipple, The valve connection or nipple enters the openin g 18 in the soft-rubber piece 11,which yields and serves to pack the joint or connection, while pressure is maintained on the end of the nipple. The arrangement of the spout 8 with reference to the stirrup is such, preferably, that when applied as described the edge of the stirrup adjacent to the Wheel will be elevated from the base-line or surface on which the pump is supported and the stirrup will rest at the rear side only, which may be enlarged, as indicated at 2*, to provide a more suitable base for the pump when'tilted, as described. The operator may place his foot upon the lower portion of "the foot or: stirrup and steady and hold the pump whileoperating the plunger by the hand. -'The pressure of the foot holds the spout in connection with the tire valve or nipple-that is tosay, a pressure is maintained at the soft-rubber piece 11, which keeps the joint tight. As the tire becomes inflated the pump may be tilted more or less. The operator may also regulate the relation of the pump to the wheel and the pressure at the cushion connection by means of the handle, while at the same time operating the pump. In case of an entirely-deflated tire the pump may have to be rocked on the base toward the wheel, so that at the beginning it will rest at the right-hand side of the foot instead of at the left-hand side, as

turned end, as indicated at 8, within which shown in Fig. 2. When the tire has become sufficiently inflated, the pump is removed by simply taking it off without manipulating any swivel or screw whatever. In operating the pump and when forcing the plunger downward the thrust is taken by the stirrup resting on the floor or supporting-surface andwhich serves as a pump foot or support, whether or not the foot of the operator is placed therein, and the tire valve or connection and the packing or cushion piece in the joint between the pump and tire connection are not subjected to unnecessary hard usage, nor is there liability of having the pump become partially disconnected from the tire and leak, as it is easily under the control of the operator.

In the modified form of construction shown in Fig. 3the form of the stirrup or pumpfoot is modified by cutting away one side thereof, so that the pump-foot or stirrup assumes the form shown by 2 The operation of this form of construction is not different from that previously described.

In the form of construction shown in Fig. 4 the cushion connection is provided directly in line with the barrel 1 in the part A, while.

the foot or support is brought off to one side in a position to reach the floor, while the pump isconnected with the bicycle-wheel tire, as shown, and the relative positions of the tire and pump can be regulated by tilting the pump, as previously described. a

In the modified form of construction shown in Fig. 5 the cylinder 1 is mounted on one end of the flat foot or base 0, and the spout or pipe D is considerably curved to bring it into proper position to establish connection with the tire. With reference to this form of con struction under normal conditions the pump would be supported by the projecting end portion 0 of the foot or base, and the operators foot on the base would be moved more or less toward or from the pump-barrel to regulate the amount of pressure upon the tire connection. I

It is evident that many other modifications and changes than those herein described may be made Without departing from the spirit of my invention.

While I have described the preferable way of operating the pump, it is obvious that the pump can be operated Without placing the operators foot on the base or in the stirrup; but the operator holds the pump in one hand, taking hold of the upper end of the barrel, while the foot or stirrup rests upon the floor or supporting-surface, and the tension of the cushion connection upon the tire-nipple is regulated by tilting the pump, while the thrust of the plunger is resisted by the foot or stirrup upon the floor or other supportingsnrface, as before pointed out. I

The valve-nipples or tire connections more generally in use are externally screw-threaded at their ends, and soft-rubber connections which are intended to engage by gripping or surrounding the nipples are much worn and injured by the chafing or gripping of the screw-thread of the nipple. This objection does not exist in the compression-joint such as I employ.

What I claim as new, and desire to secure by Letters Patent, is

1. The combination in a bicycle-pump of a pump-cylinder, a pump foot or, support rigidly attached to the lower end of the cylinder, a rigid side projecting spout or tube having a downwardly-opening outlet and an elastic washer or bushing arranged in said outlet and adapted to engage the valve-nipple, substantially as set forth.

2. The combination in a bicycle-pump of a pump-foot arranged to engage a fixed supporting-surface, a downwardly-opening cushion connection held and supported by the pump and adapted to engage a valve-nipple, the said connection arranged to engage with the valve-nipple when said pump-foot is engaged with the supporting-surface, substantially as set forth.

3. In a bicycle-pump the combination of a cylinder, and plunger, a pump-foot and'down- Wardly-opening outlet held and supported by the pump, and fitted and arranged to engage abicycle-tire valve-nipple by downward pressure at the outlet, substantially as set forth.

4:. The combination with a portable pump having a barrel and plunger, of a pump-foot arranged to engage a supporting-surface, a

downwardly-opening cushion connection held and supported by the pump and adapted to engage the object to be inflated when the pump-foot rests on the supporting-surface whereby the said connection may be held in contact by pressure exerted through the pump with the object to be inflated, and the pumpfoot resists the thrust-of the plunger, substantially as set forth.

5. In a bicycle-pump, a cylinder and plunger, a pump foot or support and a sidewiseprojecting, downwardly-opening tube held and supported by the pump and having a cushion connection ,substantially as set forth.

6. The combination with a bicycle-pump of a downwardly-opening cushion connection held and supported by the pump and adapted to engage with the object to be inflated, a pump-foot arranged to engage the support ing-surface when said cushion connection is connected with the valve-nipple,substantially as set forth.

7. The combination with the cylinder and plunger of a pump, of a cushion connection adapted to engage the tire rigidly supported from the pump and a pump-foot formed and arranged to be supported as upon a fulcrum at a point on the opposite side of the axial line of the barrel from said cushion connection when the pump is connected with the tire, substantially as set forth.

8. In a bicycle-pump, a cylinder and plunger, a sidewise-projecting, downwardly-opening rigid tube having a cushion connection plunger, a pump-foot, a cushion-tire couplingheld and supported by the pump and adapted to engage and be maintained in connection with the valve-nipple ofthe tire or other device to be inflated by the downward pressure at saidcoupling, substantially as set forth.

11. The combination with a bicycle-pump of a downwardly-opening cushion connection adapted to engage a valve-nipple and rigidly supported by the pump, and a pump-foot adapted to engage the supportingsurface when said connection is engaged with the valve-nipple, substantially as set forth.

125The combination with a bicycle-pump of a downwa rdly-opening cushion connection adapted to engage the valve-nipple, or other object to be inflated, and rigidly supported by the pump, a stirrup arranged to engage the supporting-surface when the said connection is engaged with the valve-nipple and adapted to receive the foot of the operator, substantially as set forth.

13. The combination in a bicycle-pump of a barrel, a piston, a'pump-foot and a cushion connection arranged at the side of or outof the vertical plane of the pump-foot and held and operatively supported by the pump, substantially as set forth. 7 v

I In witness whereof I have affixed my signa ture, in presence of two witnesses, this 13th day'of February, 1899.

DE WANE ,B'; SMITH.

Witnesses:

WILLARD JONES, SARAH A; BROWN. 

